namespace DBZ_ITERATOR {
	int count_sum_of_custom_arithmetic_series_bad()
	{
		int sum = 0;
		for (int i = -10; i < 10; ++i) {
			sum += 3628800 / i;
		}
		return sum;
	}


	int count_sum_of_custom_arithmetic_series_good()
	{
		int sum = 0;
		for (int i = -10; i < 10; ++i) {
			if (i != 0) {
				sum += 3628800 / i;
			}
		}
		return sum;
	}
}